OFFSET
1,1
LINKS
Nathaniel Johnston, Table of n, a(n) for n = 1..2500
MAPLE
with(numtheory): A190267 := proc(n) option remember: local k: if(n=1)then return 19:else k:=procname(n-1)+1: do if(tau(k-1)=6 and tau(k+1)=6)then return k: fi: k:=k+1: od: fi: end: seq(A190267(n), n=1..44); # Nathaniel Johnston, May 06 2011
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, May 06 2011
STATUS
approved